/// <summary>
/// 将自身作为multipart/form-data的一个文件项
/// </summary>
/// <param name="stream">数据流</param>
/// <param name="fileName">文件友好名称</param>
/// <exception cref="ArgumentNullException"></exception>
public MulitpartFile(Stream stream, string fileName)
{
if (stream == null)
{
throw new ArgumentNullException("stream");
}
this.stream = stream;
this.FileName = fileName;
this.ContentType = MimeTable.GetContentType(fileName);
}
/// <summary>
/// multipart/form-data的一个文件项
/// </summary>
/// <param name="localFilePath">本地文件路径</param>
/// <exception cref="ArgumentNullException"></exception>
/// <exception cref="FileNotFoundException"></exception>
public MulitpartFile(string localFilePath)
{
if (string.IsNullOrEmpty(localFilePath))
{
throw new ArgumentNullException();
}
if (File.Exists(localFilePath) == false)
{
throw new FileNotFoundException(localFilePath);
}
this.filePath = localFilePath;
this.FileName = Path.GetFileName(localFilePath);
this.ContentType = MimeTable.GetContentType(localFilePath);
}
/// <summary>
/// 文件扩展名与文件类型/子类型映射
/// </summary>
static MimeTable()
{
var datas = from line in MimeTable.LoadMimeLines()
let kv = line.Split(new[] { '\t', ' ' }, StringSplitOptions.RemoveEmptyEntries)
let ext = kv.FirstOrDefault()
let contenType = kv.LastOrDefault()
select new { ext, contenType };
foreach (var item in datas)
{
if (mimeTable.ContainsKey(item.ext) == false)
{
mimeTable.Add(item.ext, item.contenType);
}
}
}
/// <summary>
/// 文件内容
/// </summary>
/// <param name="stream">文件流</param>
/// <param name="name">名称</param>
/// <param name="fileName">文件名</param>
/// <param name="contentType">文件Mime</param>
public MulitpartFileContent(Stream stream, string name, string fileName, string contentType)
: base(stream)
{
if (this.Headers.ContentDisposition == null)
{
var disposition = new ContentDispositionHeaderValue("form-data");
disposition.Name = string.Format("\"{0}\"", name);
disposition.FileName = string.Format("\"{0}\"", fileName);
this.Headers.ContentDisposition = disposition;
}
if (string.IsNullOrEmpty(contentType))
{
contentType = MimeTable.GetContentType(fileName);
}
this.Headers.ContentType = new MediaTypeHeaderValue(contentType);
}